Color of Slate Most slates are gray in color and range in a continuum of shades from light to dark gray. Slate also occurs in shades of green, red, black, purple, and brown. The color of slate is often determined by the amount and type of iron and organic material that are present in the rock.

Is slate always black?

The mineral composition of slate varies significantly from place to place, however, the primary constituents of all varieties are white and black mica. Due to its characteristics, it can be split into smooth sheets. Great strength and imperviousness make slate one of the most durable and versatile materials available.

What colour goes with grey slate?

Bright blue and turquoise accessories look great against slate grey, and they’ll inject some welcome colour onto a grey feature wall.